Police raids in four cities follow Paris attacks

There has been no official statement from French authorities about the predawn counter-terror raids that have taken place across France on Monday under the newly-instituted state of emergency.

At least three people have reportedly been arrested following a large operation in Toulouse, in the south of France, while other operations occurred in Calais (in the country's north), Grenoble (near the border with Italy) and the Parisian suburb of Bobigny.

The operation, though carried out to combat terrorism, was not directly connected to the Paris attacks, according to officials. It took place in several areas of La Reynerie, the part of the Mirail suburb of Toulouse where the Islamist Mohamed Merah, who carried out March 2012 attacks against Jewish and military targets, came from.

In Grenoble, a 23-year-old man who turned himself into police after a "troubling" social media post on Saturday was remanded in custody charged with "publicly condoning an act of terrorism", according to the Dauphine Libere newspaper.

The social media post allegedly contained a photograph of the man "made up as jihadist", with the comment: "When you see this photograph on BFM [a French television channel], it will be too late."

The results of the Bobigny and Calais raids were not immediately known.